The logo is now in the HTML page, not in org.css.

ORGWEBPAGE/index.org

@@ -14,8 +14,8 @@ planning, and authoring with a fast and effective plain-text
 system.
 
 #+begin_html
-  <!-- Add a fake image and use a CSS class to make it linkable -->
-  <a href="/"><img src="http://orgmode.org/img/spacer.gif" class="logo-link" /></a>
+  <!-- The logo links to the root of the website -->
+  <a href="/"><img src="http://orgmode.org/img/org-mode-unicorn.png" class="logo-link" /></a>
   <table width="100%">
   <tr>
   <td rowspan="2">

ORGWEBPAGE/org.css

@@ -5,19 +5,13 @@
 	font-family: Verdana, Helvetica, sans-serif;
 	font-size: 11pt;
 	text-align: left;
-	background-image: url(img/org-mode-unicorn.png);
-	background-attachment: fixed;
-	background-repeat: no-repeat;
-	background-position: 30px 10px;
 	line-height:1.2em;
   }
 
   .logo-link {
         position: fixed;
-        top: 0px;
-        left: 0px;
-        width: 190px;
-        height: 190px;
+        top: 10px;
+        left: 30px;
   }
  
   h1 {font-size: 14pt;}